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Nezavi [6.7K]
3 years ago
7

A water tank that holds 30 gallons of water when full is leaking 3/4 gallon of water every hour. If no one notices and stops the

leak, how loamy hours will it have taken for the full water tank to become empty
Mathematics
1 answer:
viva [34]3 years ago
7 0
It will take 40 hours for the water tank to become empty.

Explanation:
Divide 30 by 0.75 (equivalent to 3/4). 
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Anna11 [10]

Answer:

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5 0
3 years ago
The table shows information about the population of a town. emily takes a random sample of 90 people from the town. 40 of these
Rzqust [24]

The estimate for the number of people in the town who have not been to their doctor in the last year is 7062.

<h3>What are population and sample?</h3>

It is described as a collection of data with the same entity that is linked to a problem. The sample is a subset of the population, yet it is still a part of it.

The question is incomplete.

The complete question is in the picture, please refer to the attached picture.

Total population = 1819 + 6150 + 2003 + 5918 = 15890

Emily takes a random sample of 90 people from the town.

40 of these people have not been to their doctor in the last year.

The estimate for the number of people in the town who have not been to their doctor in the last year:

= (40/90)×15890

= 7062.22 ≈ 7062

Thus, the estimate for the number of people in the town who have not been to their doctor in the last year is 7062.

Learn more about the population and sample here:

brainly.com/question/9295991

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3 0
2 years ago
HELP ME PLEASE!!!! URGENT!!!
frosja888 [35]

Answer:

Step-by-step explanation:

f(x)=4x+1

g(x) = x^2-5

(f*g)(x) = 4x^3+x^2-20x-5

3 0
3 years ago
A sofa on sale for $429.00 which is 34% less than the regular price .what is the regular price
JulijaS [17]

Answer:

Discounted price = $495 Discount Rate = 34% Solution: Let x = Original Price x = 495 + 0.35x ;Multiply whole equation by 100 to remove decimals. 100x = 49500 + 35x ;Transpose 35x to the left side of the equation. 100x-35x = 49500 ; Subtract the x terms. 65x = 49500 ; Divide both sides by 65. x = 761.54 So the original price is $761.54.

3 0
3 years ago
Assume that x and y are both differentiable functions of t and find the required values of dy/dt and dx/dt.
Mariulka [41]
This problem requires the use of the chain rule: dy / dt = [dy / dx] * [dx / dt]

y = √x => dy / dx = 1 / (2√x)

<span>(a) Find dy/dt, given x = 16 and dx/dt = 7.

dy/dt = [ 1/(2√x) ]  * 7 = [1/(2*4)] * 7 = 7/8

(b) Find dx/dt, given x = 64 and dy/dt = 8.

dx/dt = [dy/dt] /  [dy/dx] = 8 / [1/(2√64) ] = 128
</span>
6 0
3 years ago
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